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DIY Solar Pool Heater
How to Make a Simple Wooden Jewelry Box
Buying and Maintaining a 20 year old bandsaw
Restore a rusty toolbox
That seems like a lot. Do you have access to a Kill-a-Watt to measure it? I'd be surprised if your computer power supply could even put out that much wattage.
DIY Weather Station with Bluetooth
Design your own reference bookshelf speakers